<script setup lang="ts">
import { reactive, ref, onMounted, nextTick } from 'vue'
import { ElMessage } from 'element-plus'
import {
  reqAddOrUpdateTrademark,
  reqHasTrademark,
  reqRemoveTrademark,
} from '@/api/product/trademark'
import type {
  Records,
  TradeMarkResponseData,
  TradeMark,
} from '@/api/product/trademark/type'
import type { UploadProps } from 'element-plus'
//当前页码
let pageNo = ref<number>(1)
//每一页展示多少条数据
let limit = ref<number>(3)
//存储已有品牌数据总数
let total = ref<number>(0)
//存储已有品牌的数据
let trademarkArr = ref<Records>([])
//获取已有品牌的接口封装为一个函数:在任何情况下向获取数据,调用次函数即可
const getHasTrademark = async (pager = 1) => {
  //当前页码
  pageNo.value = pager
  // 发起请求
  let result: TradeMarkResponseData = await reqHasTrademark(
    pageNo.value,
    limit.value,
  )
  console.log(result, 'result')
  if (result.code === 200) {
    //存储已有品牌总个数
    total.value = result.data.total
    trademarkArr.value = result.data.records
  }
}

//分页器当前页码发生变化的时候会触发
//对于当前页码发生变化自定义事件,组件pagination父组件回传了数据(当前的页码)
// const changePageNo = () => {
//当前页码发生变化的时候再次发请求获取对应已有品牌数据展示
//   getHasTrademark()
// }

//当下拉菜单发生变化的时候触发次方法
//这个自定义事件,分页器组件会将下拉菜单选中数据返回
const sizeChange = () => {
  //当前每一页的数据量发生变化的时候，当前页码归1
  getHasTrademark()
}

//组件挂载完毕钩子---发一次请求,获取第一页、一页三个已有品牌数据
onMounted(() => {
  getHasTrademark()
})

// dialog
let dialogVisible = ref<boolean>(false)

let trademarkParams = reactive<TradeMark>({
  tmName: '',
  logoUrl: '',
})

// 新增回调
const addTrademark = () => {
  //清空收集数据  这里清空只需要写一次
  trademarkParams.id = 0
  trademarkParams.tmName = ''
  trademarkParams.logoUrl = ''
  dialogVisible.value = true
  //第一种写法:ts的问号语法
  // formRef.value?.clearValidate('tmName');
  // formRef.value?.clearValidate('logoUrl');
  nextTick(() => {
    formRef.value.clearValidate('tmName')
    formRef.value.clearValidate('logoUrl')
  })
}
// 编辑回调
const updateTrademark = (row: TradeMark) => {
  // trademarkParams.tmName = row.tmName
  // trademarkParams.logoUrl = row.logoUrl
  //清空校验规则错误提示信息
  nextTick(() => {
    formRef.value.clearValidate('tmName')
    formRef.value.clearValidate('logoUrl')
  })

  // trademarkParams = {
  //   id: row.id,
  //   ...row,
  // }
  Object.assign(trademarkParams, row)

  dialogVisible.value = true
}
// 删除回调
const deleteTrademark = async (id: number) => {
  const result: any = await reqRemoveTrademark(id)
  console.log(result, 'result')

  if (result.code == 200) {
    //删除成功提示信息
    ElMessage({
      type: 'success',
      message: '删除品牌成功',
    })
    //再次获取已有的品牌数据
    getHasTrademark(
      trademarkArr.value.length > 1 ? pageNo.value : pageNo.value - 1,
    )
  } else {
    ElMessage({
      type: 'error',
      message: '删除品牌失败',
    })
  }
}
// 取消
const cancel = () => {
  dialogVisible.value = false
}
//获取el-form组件实例
let formRef = ref()
// 确定按钮
const confirm = async () => {
  //在你发请求之前,要对于整个表单进行校验
  //调用这个方法进行全部表单相校验,如果校验全部通过，在执行后面的语法
  await formRef.value.validate()

  let result: any = await reqAddOrUpdateTrademark(trademarkParams)
  if (result.code === 200) {
    dialogVisible.value = false
    ElMessage({
      type: 'success',
      message: trademarkParams.id ? '修改品牌成功' : '添加品牌成功',
    })
    //再次发请求获取已有全部的品牌数据
    getHasTrademark(trademarkParams.id ? pageNo.value : 1)
  } else {
    //添加品牌失败
    ElMessage({
      type: 'error',
      message: trademarkParams.id ? '修改品牌失败' : '添加品牌失败',
    })
    dialogVisible.value = false
  }
}

//图片上传成功钩子
const handleAvatarSuccess: UploadProps['onSuccess'] = (
  //response:即为当前这次上传图片post请求服务器返回的数据
  //收集上传图片的地址,添加一个新的品牌的时候带给服务器
  response,
  uploadFile,
) => {
  trademarkParams.logoUrl = response.data
  //图片上传成功,清除掉对应图片校验结果
  formRef.value.clearValidate()
}

//上传图片组件->上传图片之前触发的钩子函数
const beforeAvatarUpload: UploadProps['beforeUpload'] = (rawFile) => {
  //钩子是在图片上传成功之前触发,上传文件之前可以约束文件类型与大小
  //要求:上传文件格式png|jpg|gif 4M
  if (
    rawFile.type == 'image/png' ||
    rawFile.type == 'image/jpeg' ||
    rawFile.type == 'image/gif'
  ) {
    if (rawFile.size / 1024 / 1024 < 4) {
      return true
    } else {
      ElMessage({
        type: 'error',
        message: '上传文件大小小于4M',
      })
      return false
    }
  } else {
    ElMessage({
      type: 'error',
      message: '上传文件格式务必PNG|JPG|GIF',
    })
    return false
  }
}
//品牌自定义校验规则方法
const validatorTmName = (rule: any, value: any, callBack: any) => {
  //是当表单元素触发blur时候,会触发此方法
  //自定义校验规则
  if (value.trim().length >= 2) {
    callBack()
  } else {
    //校验未通过返回的错误的提示信息
    callBack(new Error('品牌名称位数大于等于两位'))
  }
}
//品牌LOGO图片的自定义校验规则方法
const validatorLogoUrl = (rule: any, value: any, callBack: any) => {
  //如果图片上传
  if (value) {
    callBack()
  } else {
    callBack(new Error('LOGO图片务必上传'))
  }
}

//表单校验规则对象
const rules = {
  //required:这个字段务必校验,表单项前面出来五角星
  //trigger:代表触发校验规则时机[blur、change]
  tmName: [{ required: true, trigger: 'blur', validator: validatorTmName }],
  logoUrl: [{ required: true, validator: validatorLogoUrl }],
}
</script>
<template>
  <div>
    <el-card>
      <el-button
        type="primary"
        size="default"
        icon="Plus"
        @click="addTrademark"
      >
        添加品牌
      </el-button>
      <el-table
        class="tall_table"
        border
        :data="trademarkArr"
        style="width: 100%"
      >
        <el-table-column
          prop="date"
          align="center"
          label="序号"
          width="100"
          type="index"
        ></el-table-column>
        <el-table-column align="center" label="品牌名称">
          <template #="{ row }">
            <div>{{ row.tmName }}</div>
          </template>
        </el-table-column>
        <el-table-column label="品牌Logo" width="180" align="center">
          <template #="{ row }">
            <img
              style="width: 100px; height: 100px"
              :src="row.logoUrl"
              alt=""
            />
          </template>
        </el-table-column>
        <el-table-column align="center" label="品牌操作" width="180">
          <template #="{ row, $index }">
            <el-button
              type="primary"
              size="small"
              icon="Edit"
              @click="updateTrademark(row)"
            ></el-button>

            <el-popconfirm
              :title="`您确定要删除${row.tmName}?`"
              width="250px"
              icon="Delete"
              @confirm="deleteTrademark(row.id)"
            >
              <template #reference>
                <el-button
                  type="primary"
                  size="small"
                  icon="Delete"
                ></el-button>
              </template>
            </el-popconfirm>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页器组件
        pagination
          v-model:current-page:设置分页器当前页码
          v-model:page-size:设置每一个展示数据条数
          page-sizes:用于设置下拉菜单数据
          background:设置分页器按钮的背景颜色
          layout:可以设置分页器六个子组件布局调整
      -->
      <el-pagination
        v-model:current-page="pageNo"
        v-model:page-size="limit"
        @current-change="getHasTrademark"
        @size-change="sizeChange"
        :page-sizes="[10, 20, 30, 40]"
        :page-count="8"
        :background="true"
        layout="prev, pager, next, jumper,total, sizes"
        :total="total"
      />
    </el-card>

    <!-- 对话框组件:在添加品牌与修改已有品牌的业务时候使用结构 -->
    <!--
      v-model:属性用户控制对话框的显示与隐藏的 true显示 false隐藏
      title:设置对话框左上角标题
    -->
    <el-dialog
      v-model="dialogVisible"
      :title="trademarkParams.id ? '修改品牌' : '添加品牌'"
      width="500"
    >
      <el-form
        :model="trademarkParams"
        :rules="rules"
        ref="formRef"
        style="max-width: 600px"
      >
        <el-form-item label="品牌名称" label-width="100px" prop="tmName">
          <el-input v-model="trademarkParams.tmName" placeholder="品牌名称" />
        </el-form-item>
        <el-form-item label="品牌LOGO" label-width="100px" prop="logoUrl">
          <!-- upload组件属性:action图片上传路径书写/api,代理服务器不发送这次post请求  -->
          <el-upload
            class="avatar-uploader"
            action="/api/admin/product/fileUpload"
            :show-file-list="false"
            :on-success="handleAvatarSuccess"
            :before-upload="beforeAvatarUpload"
          >
            <img
              v-if="trademarkParams.logoUrl"
              :src="trademarkParams.logoUrl"
              class="avatar"
            />
            <el-icon v-else class="avatar-uploader-icon"><Plus /></el-icon>
          </el-upload>
        </el-form-item>
      </el-form>
      <template #footer>
        <div class="dialog-footer">
          <el-button @click="cancel">取消</el-button>
          <el-button type="primary" @click="confirm">确定</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>

<style scoped lang="scss">
.avatar-uploader .avatar {
  width: 178px;
  height: 178px;
  display: block;
}
.tall_table {
  margin: 20px 0;
}
</style>

<style>
.avatar-uploader .el-upload {
  border: 1px dashed var(--el-border-color);
  border-radius: 6px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: var(--el-transition-duration-fast);
}

.avatar-uploader .el-upload:hover {
  border-color: var(--el-color-primary);
}

.el-icon.avatar-uploader-icon {
  font-size: 28px;
  color: #8c939d;
  width: 178px;
  height: 178px;
  text-align: center;
}
</style>
